Don't display the `is_admin?` flag for user API responses

Closes #29903

See merge request !10846

Fix typo in discussions doc.

See merge request !10889

- To prevent an attacker from enumerating the `/users` API to get a list of all
  the admins.

- Display the `is_admin?` flag wherever we display the `private_token` - at the
  moment, there are two instances:

  - When an admin uses `sudo` to view the `/user` endpoint
  - When logging in using the `/session` endpoint

Add Health Check Documentation

Closes #30649

See merge request !10565

Gitaly testing toml

Closes gitaly#182

See merge request !10605

Fix scoping issues with Spinach tests

See merge request !10895

Fix scoping issues with Spinach tests (e.g. https://gitlab.com/gitlab-org/gitlab-ce/builds/14929499)

Remove names from docs and add vue experts instead

See merge request !10817

Use jQuery niceness on blob_fork_suggestion

See merge request !10858

Add aria to icon

See merge request !10670

Ensure replying to an individual note by email creates a note with its own discussion ID

Closes #31067

See merge request !10890

Add normal wrapping to task lists

Closes #31269

See merge request !10860

Moved NotebookLab assets into repo

See merge request !10630

Eliminate N+1 queries in loading namespaces for every issuable in milestones

See merge request !10871

Fix commenting on an existing discussion on an unchanged line that is no longer in the diff

Closes #31339

See merge request !10888

Fixes the spacing around diff discussion buttons

Closes #31102

See merge request !10879

Test both PostgreSQL and MySQL for the win

Closes #2582

See merge request !10156

Allow OAuth clients to push code

Closes #30305

See merge request !10677

See merge request !10567
Signed-off-by: Rémy Coutable <remy@rymai.me>

Cache Routable#full_path in RequestStore to reduce duplicate route loads

See merge request !10872

doc: fix gitaly url typo

See merge request !10772

Properly expire cache for **all** MRs of a pipeline

Closes #31040

See merge request !10770

Fix missing duration for blocked pipelines

Closes #31264

See merge request !10856

Fix incorrect commit status text on main project page

See merge request !10863

Use `:empty_project` where possible in top-level feature specs

See merge request !10836

Make handler metric params more explicit

See merge request !10854

Documentation: correct typo (missing 's') in project pipeline job list endpoint

See merge request !10862

Fix incorrect spec filenames which were ingored by CI

See merge request !10875

Added test to prevent ‘Request access’ regression

See merge request !10866

We see in #27387 that a call to `polymorphic_path` will cause duplicate
SELECT route calls for each merge request in a milestone. This happens
because calling `project.namespace.becomes(Namespace)` will instantiate
a new instance of a Namespace for each merge request, which causes a N+1
query on the routes table. This change caches the state of the route by
the specific class and ID, which dramatically eliminates duplicate work.